Brick-clay crusher-rolls.



No. 728,831. PA TENTED MAY 26; 1903.

- J. H. BAGH.

BRICK CLAY GRUSHER ROLLS.

APPLIOATION FILED 1030.27, 1898.

H0 MODEL.

WITNESSES, m VENTOI? UNITED STATES- Iatented May 26, 1903.

PATENT OFFICE.

BRICK-CLAY CRUSHER-ROLLS.

SPECIFICATION formingpart of Letters Patent No. 728,831, dated May 26, 1903.

Application filed December 27,1898. Serial No. 700,312. (No model.)

To (tZZ whom it may concern:

Be it known that I, JULIUS H. EACH, a oiti-- State of Illinois, have invented certain new and useful Improvements in Brick Clay Crusher-Rolls, of which the following is a specification. My invention relates to crusher-rolls for brick-clay, and particularly to means for removing the stones from the clay during the process of crushing.

The main objects of my invention are to facilitate the removal of stones from the clay and to avoid the excessive wear on the rolls which has heretofore been caused through the binding of stones between same. I accomplish these objects by the construction illustrated in the accompanying drawings, in which Figure 1 is a top plan of a pair of crusherrolls constructed according to my invention, omitting the granulator and parts above the rolls. Fig. 2 is a front elevation showing part of the granulator, and Fig. 3 is an end elevation of same. 7

The main features ofmy device are, first, that my rolls are geared so that one revolves at a diiferent speed'than the other, and, second, that one of my rolls is smooth, while the other is provided with a spiral groove for carrying the stones toward the discharge end. By driving one of the rolls at difierent speed than the otherv the binding of stones between same is to a great extent avoided.

In the device shown in the drawings the rolls 1 and 2 are mounted on shafts 3 and 4, respectively journaled in bearings 5 and 6 on the frame 7. The driving-pulley 3 is rigid on the shaft 3. The gear-wheel 8 is rigid on the shaft 3 and meshes with the gear-wheel 9, which is rigid on the shaft 4.. The gearwheel 8 is smaller than the gear-wheel 9, making about twenty-one revolutions to nineteen revolutions of the latter. I find, however,

that these gear-wheels may be transposed, so that the smooth roller 1 will run at greater speed than the grooved roller 2 and also that the relative speed of the rollers may be varied.

The roller 2 is provided with a spiral groove 2'. The office of this is merely to carry the stones toward the discharge end of the rolls at a. The shoulder 2 or left wall (see Figs. 1 and 2) of the groove 2 urges the stones toward the right of the rolls.

The clay is dropped between the rolls from a granulator 10, which is located above, as shown in Figs. 2 and 3. The form of granulator or reducing device may be varied, since this is merely auxiliary to my invention.

At the discharge end of the rolls and extending' down between same nearly to their middle is a flexible wall or flap 11, preferably of rubber cloth, which prevents the stones from being thrown out at too great speed, but permits same to pass out by pushing the end of the flap forward. A wall 12, preferably of rigid material, such as sheet-iron, and similar in shape to the flap 11, is fastened at the other end of the rolls for preventing some of the stones and clay from dropping out at that end. Both of these walls are fastened to the granulator or other parts of the frame and are also merely auxiliary tomy invention.

The operation of my device is as follows: The clay and stones after reduction by the granulator are dropped down between the rolls. Therolls turning in the direction of the arrows crush the clay and discharge same below, while the stones are retained in the trough of the rolls and through the action of the shoulder 2" of the groove 2 are urged toward the discharge end of the rolls and there, passing under the flap 11, are dropped out at a.

I have shown the rolls in the form of a frustum of a cone, since I prefer this form. It is the common form where two smooth rolls are used and has been of some effect in urging the stones toward the large end while the rolls were new. Heretofore, however, such rolls have been driven at the same speed, thus causing the stones to bind between same and soon wear grooves in one or both rolls. It has been the practice for an operator to pull or rake the stones toward the discharge end with a stick or otherinstrument for that purpose; but this has only partly prevented the excessive wear on the rolls. If both rolls were revolved at the same speed, a groove would soon be worn in the smooth roll 1, which would register with the groove 2 of the roll 2. The groove 2 is gradually deepened same speed.

and enlarged through the wear of the stones, and if both rolls were revolved at the same speed the registering groove formed in the smooth roll would also be gradually widened 5 and deepened. With the rolls revolving at different peripheral speeds the wear on the smooth roll through the action of the stones is distributed over the surface of said smooth roll instead of being directed in a course regro istering with the groove 2.

It will be understood that some of the details of structure of the device shown may be altered without departing from the spirit of my invention. I therefore do not confine my :5 self to such details except as hereinafter limited in the claims.

I am aware that a device has been used heretofore in which both crusher-rolls have been spirally grooved and geared to revolve at the I am also aware that a spirally grooved roll has been used with a coacting un grooved roll revolving at the same speed or with a coacting stationary guide-plate. I do not broadly claim either of these constructions.

What I claim as my invention, and desire to secure by Letters Patent, is-

1. An apparatus for crushing clay and removing the stones therefrom, comprising a 0 supporting-frame; a pair of coacting crusherrolls, one of same having a groove extending spirally around and along its periphery, and the other having substantially smooth and nngrooved all of that part of its periphery 5 opposed to and coacting with the spirallygrooved part; and means for simultaneously revolving said rolls at difierent peripheral speeds.

2. An apparatus for crushing clay and removing the stones therefrom, comprising a supporting-frame; a pair of coacting crusherrolls, one of same having a groove extending spirally around and along its periphery, from end to end, and the other having substantially smooth and nngrooved all of its periphery, and the other having substantially smooth and nngrooved all of that part of its periphery opposed to and coacting with the spirally-grooved part; and means for simultaneously revolving said rolls at differcut peripheral speeds.

4. An apparatus for crushing clay and removing the stones therefrom, comprising a supportingframe; a pair of conical coacting crusher-rolls, one of the same having a groove extending spirally around and along its periphery, from end to end, and the other having substantially smooth and nngrooved all of that part of its periphery opposed to and coactingwith the spirally-grooved periphery; and means for simultaneously revolving said rolls at different peripheral speeds.

5. An apparatus for crushing clay and removing the stones therefrom, comprising a supporting-frame; a pair of coacting crusherrolls; one being conical and one having a groove exten ding spi rally around and along its periphery, and the other having substantially smooth and nngrooved all of that part of its periphery opposed to and coacting with the spirally-grooved part; and means for simultaneously revolving said rolls at diiferent peripheral speeds.

6. An apparatus for crushing clay and removing the stones therefrom, comprising a supporting-frame; a pair of coacting crusherrolls; one being conical and one having a groove extending spirally around and along its periphery, from end to end, and the other having substantially smooth and nngrooved all of that part of its periphery opposed to and coacting with the spirally-grooved periphery; and means for simultaneously revolving said rolls at diiferent peripheral speeds.

7. An apparatus for crushing clay and removing the stones therefrom, comprising a supporting-frame a pairof coacting crusherrolls; one being conical and having a groove extending spirally around and along its periphery, and the other having substantially smooth and nngrooved all of that part of its periphery opposed to and coacting with the spirally-grooved part; and means for simultaneously revolving said rolls at diiferent peripheral speeds.

8. An apparatus for crushing clay and removing the stones therefrom, comprising a supporting-frame; a pair of coacting crusherrolls; one being conical and having a groove extending spirally around and along its periphery,from end to end,aud the other having substantially smooth and nngrooved all of that part of its periphery opposed to and coacting with the spirally-grooved periphery; and means for simultaneously revolving said rolls at different peripheral speeds.

9. An apparatus for crushing clay and removing the stones therefrom, comprising a su pporting-frame; a pair of coactin g crusherrolls, one of same having a groove extending spirally around and along its periphery, and the other being conical and having substantially smooth and nngrooved all of that part of its periphery opposed to and coacting with the spirally-grooved part; and means for simultaneously revolving said rolls at different peripheral speeds.

10. An apparatus for crushing clay and removing the stones therefrom, comprising a supporting-frame; a pair of coacting crusherrolls, one of the same having a groove extend ing spirally around and along its periphery, from end to end, and the other being conical and having substantially smooth and ungrooved all of that part of its periphery opposed to and ooaoting with the spirallygrooved periphery; and means for simultaneously revolving said rolls at different peripheral speeds.

. 11. An apparatus for crushing clay andromoving the stones therefrom, comprising a supporting-frame; a pair of coacting crusherrolls, one of the same having a groove extended spirally around and along its periphery from end to end, and the other having a substantially smooth periphery throughout its length from a point opposite the beginning of said groove to a point opposite-the end of said groove; and means for simultaneously revolving said rolls at different peripheral speeds.

Signed by me at December, 1898.

Chicago this 10th day of JULIUS H. BAOH. Witnesses:

WM. R. RUMMLER, ALFRED MELTZER. 

